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Publications associées (125)

Binaural Audio Signal Processing Using Interaural Coherence Matching

Binaural room impulse responses (BRIRs) characterize the transfer of sound from a source in a room to the left and right ear entrances of a listener. Applying BRIRs to sound source signals enables headphone listening with the perception of a three dimensio ...

EPFL2010

Practical active and semi-active strategies for the control of room acoustics in the low frequency range

Hervé Lissek, Romain Boulandet, Anne-Sophie Moreau

Modal acoustics is one of the main sources of annoyance in the low frequency range in rooms. Active noise control techniques can be deployed to reach sufficient acoustic benefit, but limited to a single frequency, whereas broader efficiency would require c ...

2010

The Wolf Corpus: Exploring group behaviour in a competitive role-playing game

In this paper we present the Idiap Wolf Database. This is a audio-visual corpus containing natural conversational data of volunteers who took part in a competitive role-playing game. Four groups of 8-12 people were recorded. In total, just over 7 hours of ...

2010

Spatial echogram analysis of a small auditorium with observations on the dispersion of early reflections.

Hervé Lissek, Xavier Falourd, Lukas Rohr

Classical room acoustics are based on the interpretation of different sound attributes such as reverberation time, clarity and spatial decay. Based on echograms calculated from a microphone array, the dispersion of early reflections is measured and the ref ...

2010

Sound Field Reconstruction: An Improved Approach For Wave Field Synthesis

Martin Vetterli, Mihailo Kolundzija, Christof Faller

Wave field synthesis (WFS) is a prevalent approach to multiple-loudspeaker sound reproduction for an extended listening area. Although powerful as a theoretical concept, its deployment is hampered by practical limitations due to diffraction, aliasing, and ...

2009

Visual Speaker Localization Aided by Acoustic Models

The following paper presents a novel audio-visual approach for unsupervised speaker locationing. Using recordings from a single, low-resolution room overview camera and a single far-field microphone, a state-of-the art audio-only speaker localization syste ...

2009

Multimodal Speaker Localization from Omnidirectional Videos

Jean-Philippe Thiran, Mihai Gurban, Pascal Reuse

The use of omnidirectional cameras for videoconferencing promises to simplify the hardware setup necessary for large groups of participants. We investigate the use of a multimodal speaker detection algorithm on audio-visual sequences captured with such a c ...

2009

Distributed multi-view image coding with learned dictionaries

Pascal Frossard, Ivana Tosic

This paper addresses the problem of distributed image coding in camera neworks. The correlation between multiple images of a scene captured from different viewpoints can be effiiciently modeled by local geometric transforms of prominent images features. Su ...

2009

Binaural reverberation using a modified Jot reverberator with frequency- dependent interaural coherence matching

Christof Faller, Fritz Menzer

An extension of the Jot reverberator is presented, producing binaural late reverberation where the interaural coherence can be controlled as a function of frequency such that it matches the frequency-dependent interaural coherence of a reference binaural r ...

2009

Design and Limitations of Non-Coincidence Correction Filters for Soundfield Microphones

Mihailo Kolundzija, Christof Faller

The tetrahedral microphone capsule arrangement in a Soundfield microphone captures a so-called A-format signal which is then converted to a corresponding B-format signal. The phase differences between the A-format signal channels due to non-coincidence of ...

2009

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